I'll Show You What Happens When Rockets Don't Have Fins

[Cynthia_Cantrell]

I learned this lesson the hard way back in the 1970's, when one of my own highly modified rockets went sideways shortly after launch, causing all of us to run in different directions. At that point I went back and read all the info on "center of pressure" and "center of gravity" that I had come across before but didn't quite make sense. After the renegade launch however, the pieces started fitting together and I had an "a-HA!" moment.

Physics - it's not just a good idea, it's THE LAW!

[BrainfooTV]

This reminds me of one of my first crappy videos when I built foil rockets after being inspired by the king of random when Grant was at his best.(
Bit of a copy of his style but I was learning) Without Grant Thompson I would never have been inspired to start YouTube and find my own niche, I will be forever grateful. It took me about 2 weeks to perfect the no fin match rocket, but to my knowledge still the easiest and furthest range of any match rocket.

[atsumeru]

Missed an opportunity there for Kerbal Space Program 😭 e.g. to demonstrate one of the consequences of a finless rocket, with locked engines and no supporting thrusters.

Learned it the hard way, to properly fin my core stages, and boosters, when they're needed.
It's an excellent game for the channel viewers, and a bit of a shame it wasn't used here, but regardless, still a great and informative video!

[tunguskalumberjack]

This is one of the only channels I know that 100% deserves it’s large subscriber count. Great content, and a great host!

[emcllns]

This is one of those underrated bits of knowledge that when you have kids, you look like a genius.

[Saruman]

You’re an absolute mad lad. I can’t believe how many ideas you have for videos without watering down the quality. Everything you put out is genuinely interesting and entertaining and you make like a video a day…

[MitzvosGolem]

In marine architecture engineering "center of buoyancy vs center of gravity " a point called "meta center" where as center of gravity must be below center of buoyancy or ship/boat capsizes .
Similar .
Excellent 👍

[scottmoe]

I've always wanted to make a rocket. 38 years old and have never tried it.
Now that I'm a rocket scientist, i just might!

[rgbii]

When I was a kid building rockets, once we found the center of gravity, we'd put a string around that spot and hold it with tape. Then we'd spin it around over our heads, letting the string out till it was a few feet. If the nose took the lead as we wanted, the center of preasure was behind the center of gravity and it was ready to fly. Just needed to repeat the test if you made any modifications to weight or shape. If you didn't, you got a quick reminder when you launched it :)

[fgbhrl]

This is such a cool practical demonstration. Congrats.
KSP helped me realize these concepts, but this feels so much more "real".

[scottstewart]

this is a great video, I teach 4H kids model rocketry and you gave me good examples of why rockets need fins and explanation of center of pressure and gravity

[GooogleGoglee]

I want more videos and explanations about this field and matters! Good one

[DPDK]

The trick to the shadow method is to account for the total fin area. The shape drawn only accounts for two fins so the tail end is slightly light causing the center of pressure to move forward. At model scales you can just eyeball an extra amount, 1/2 the length of the fin, on the end of the fin profile on each side. With the actual Estes rocket we used to add a few metal washers to the bottom of the nose cone to bring the CG really far forward.

[fisher]

I've learned so much from this channel

[its_princereal]

It's not just rockets you can see it with arrows as well 👍

[kymcainday]

When I saw the thumbnail and the title, I initially thought "ah, I already know what the rocket fins are for; for stabilisation." I was about to skip it when I thought, "wait, maybe there is something I don't know just yet" so I clicked it. I already know about the concept of airplane about how they fly, the airfoil, the CG, flaps, ailerons and other controls like Thrust Vectoring. What I didn't know is the Center of Gravity should also be applied on rockets, and the center of pressure is new to me. It's worth the click. Thanks a lot.

[TheTechAdmin]

9:48 Congratulations, you've now caused thousands of people to experience the Dunning–Kruger effect.

[specialkender]

Jeeesus man 4M subscribers! I am so happy for you, when i came to the channel back in the days it was small but i was like "This guy got it"

[samjam]

So that’s why all my rockets were dog water on kerbal space program

[calvinatdrifterstudio]

When I was a kid, all my weird rocket inventions didn't make it very far before spiraling. If I had this video back then, I would probably be in jail or something as a teenager 😂😂